This product is a lot of 2 Seagate Constellation.2 500GB 7200RPM 2.5" ST9500620NS HDD with Caddy. These hard drives are designed for use with PCs and come in a sleek silver color. They offer a fast read speed of 500MB/s and a transfer rate of 6GB/sec. With a storage capacity of 500GB and a cache size of 64MB, these HDD drives are ideal for storing a large amount of data. The drives are compatible with SATA I interface and feature hot swap capabilities for easy installation and replacement. Made in Thailand, these Seagate hard drives are reliable and efficient storage solutions for various computing needs.